Suspected Iranian hackers target airline with new backdoor

A suspected, state-sponsored Iranian threat group has attacked an airline with a never-before-seen backdoor. 

On Wednesday, cybersecurity researchers from IBM Security X-Force said an Asian airline was the subject of the attack, which likely began in October 2019 until 2021.  

The advanced persistent threat (APT) group ITG17, also known as MuddyWater, leveraged a free workspace channel on Slack to harbor malicious content and to obfuscate communications made between malicious command-and-control (C2) servers. 

“It is unclear if the adversary was able to successfully exfiltrate data from the victim environment, though files found on the threat actor’s C2 server suggest the possibility that they may have accessed reservation data,” IBM says. 

The Slack messaging Application Program Interface (API) was abused by a new backdoor deployed by the APT named “Aclop.” Aclip is able to harness the API to both send data and receive commands – with system data, screenshots, and files sent to an attacker-controlled Slack channel. 

Overall, three separate channels were used by the backdoor to quietly exfiltrate information. Once installed and executed, the backdoor collected basic system data including hostnames, usernames, and IP addresses which were then sent to the first Slack channel after encryption. 

The second channel was utilized

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